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SYSPLIT DUCT
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Duct High Pressure Split
INSTALLATION MANUAL
CONTENTS
PAGE
WARNING
PRECAUTIONS.......................................................................................1
ACCESSORIES (INDOOR UNIT).............................................................. 2
INSTALLATING INDOOR UNIT ................................................................2
INSTALLATING OUTDOOR UNIT...............................................................4
HEAT INSULATION OF THE PIPE .............................................................8
INSTALL THE CONNECTIVE PIPE.............................................................8
INSTALL THE DRAIN PIPE......................................................................11
ELECTRIC CONNECTION........................................................................11
ELECTRIC WIRE DIAGRAM....................................................................13
METHODS OF CONFIGURING AND SELECTING INSTALLATION...............14
CONSTRUCTION AND VENTILATION PIPELINE DESIGN SCHEME............15
TRIAL RUN............................................................................................16
Do not throw or slam the remote controller.
Operate the remote controller within the receiving scope of the
indoor unit, and direct the transmitting part of the remote controller to the receiver of the indoor unit.
The remote controller should be over 1m away from the
television or sound box.
Do not place the remote controller at a moist place, near the
heat sources such as stove, or expose it directly in the sunlight.
Ensure correct positive and negative poles when loading the
batteries.
Decide the correct way of conveying the equipment.
Try to transport this equipment with the original package.
If the a ir conditioner needs to be installed on a metal part of the
building, electric insulation must be performed, and the installation must meet the relevant technical standards of electric
devices.
The appliance must be installed 2.3m above floor.
1. PRECAUTIONS
Precautions before reading the installation manual.
Read this user manual carefully before installing the equipment.
The air conditioner must be installed by professional technicians.
When installing the indoor unit and its accessory pipes, adhere to
this user’s manual as far as possible.
Inspect and make sure the piping and cabling are correct before
powering on the air conditioner.
This information may change with the update of this machine, and
no further notice will be given for such change.
The safety precautions listed here are divided into two categories. In
either case, important safety information is listed which must be read
carefully.
WARNING
Failure to observe a warning may result in death.
CAUTION
Failure to observe a caution may result in injury or damage
to the equipment.
After completing the installation, make sure that the unit operates
properly during the start-up operation. Please instruct the customer
on how to operate the unit and keep it maintained.Also, inform
customers that they should store this installation manual along with
the owner's manual for future reference.
The appliance shall not be installed in the laundry.
Before obtaining access to terminals, all supply circuits
must be disconnected.
The appliance must be positioned so that the plug is
accessible.
The enclosure of the appliance shall be marked by word, or
by symbols, with the direction of the fluid flow.
If the supply cord is damaged, it must be replaced by the
manufacture or its service agent or a similarly qualified
person in order to avoid a hazard.
An all-pole disconnection switch having a contact
separation of at least 3mm in all poles should be
connected in fixed wiring.
CAUTION
Install the unit where enough space of installation and maintenance is available.
Install the unit where the ceiling is horizontal and enough for
bearing the weight of the indoor unit.
Install the unit where the air inlet and outlet are not baffled and
are the least affected by external air.
Install the unit where the supply air flow can be sent to all parts
in the room.
Install the unit where it is easy to lead out the connective pipe
and the drain pipe.
Install the unit where no heat is emitted from a heat source
directly.
Installation Manual
1
Installing the equipment in any of the following places may lead
to faults of the equipment (if that is inevitable, consult the
supplier):
The site contains mineral oils such as cutting lubricant.
3. INSTALLATING INDOOR UNIT
3.1 Installation Space
Ensure enough space required for installation and maintenance.
Over 500mm
Seaside where the air contains much salt.
Hotpring area where corrosive gases exist, e.g., sulfide gas.
Factories where the supply voltage fluctuates seriously.
Inside a car or cabin.
Maintenance space
Place like kitchen where oil permeates.
Place where strong electromagnetic waves exist.
600mmX600mm
Inspection orifice
Place where flammable ga ses or materials exist.
Fig.3-1
Place where acid or alkali gases evaporate.
Other special environments.
Install the unit where enough space of installation and maintenance is available.
Install the unit where the air inlet and air outlet are free from
obstacles and strong wind.
Note: Ensure that the minimum
drain gradient is over 1/100.
Install the unit in a dry and well ventilated place.
Inspection orifice
Install the unit where the bearing surface is level and can bear
weight of the unit, and is suitable for installing the unit horizontally without increasing noise or vibration.
Fig.3-2
Install the unit where the operation noise and the expelling of air
do not affect neighbours.
Install the unit where no flammable gas is leaked.
Install the unit where it is convenient for pipe connection and
electric connection.
3.2 Install
10 Pendant Bolts Or Ground Bolts
Pendant bolt hole
2. ACCESSORIES (INDOOR UNIT)
760
840
800
4-12×72
Air inlet side
NOTE
1180
If in the wire control mode, the accessories do not include
display panel assembly remote controller or mounting bracket.
(Unit:mm)
Fig.3-3
Table.2-1
Accessory name
Qty.
Owner’s manual
1
Installation manual
1
Shape
Purpose
This manual
Restriction assembly
1
Connect to system
Water connective pipe
1
Connect to water drainage pipe
D isplay board subassembly
1
Connect to control signal
Protective sleeve for refrigerant
inlet and outlet pipes
2
Remove controller
1
AAA battery
2
Installation Manual
2
Use 10 or bigger screws. The screw material is high-quality
carbon steel (whose surface is zinc plated or undergoes other
rustproof treatment) or stainless steel.
The treatment of the ceiling varies between buildings. For
detailed measures, consult with the fitting-out staff.
3.3 Suspending The Indoor Unit
Use a hoisting device to hoist the indoor unit, align it with the
installation screw, adjust the horizontality and then tighten it.
Unit body
Pendant bolt
Fix the pendant bolts firmly and reliably in light of the specific
situation.
Installation of the pendant bolt in different environments.
A. Wooden structure
Put rectanglar sticks across the beams, and set pendant bolts.
Wooden span
Beam
Ceiling
Fig.3-9
Pendant bolt
Fig.3-5
3.4 Design And Connection Of Duct
B. New concrete roughcast
Use embedded bolts, embedded pulling plugs, and embedded
stick harness.
The duct design must comply with the national heating air
conditioner pipeline design specifications.
The duct accessories and materials must be produced by
professional manufacturers.
Steel bar
In order to prevent air flow shorting, do not keep the air inlet pipe
near the air outlet pipe.
Embedded bolt
Pipe pendant embedded bolt
Fig.3-6
Install a filter at an easy-to-maintain place such as intake pipe.
(Otherwise, the duct will gather on the air heat exchanger and
lead to fault and water leak of the air conditioner.)
In order to suppress noise effectively, install noise suppression
and sound insulation devices, especially in the noise-sensitive
spaces such as meeting rooms.
C. New concrete roughcast
Set it with embedded bushes or embedded bolts.
For connection of the flange plane, use non-flammable canvas
adapter to prevent transmission of vibration. For its size, see the
indoor unit outline diagram. Use M6X20 screws (configured on
site) for connection.
All pipelines must be connected closely and soundly without
leak of air. The pipelines must be adiabatic and free from
condensation.
Key points of duct connection
Blade plug-in unit
Canvas adapter Canvas adapter
Slide plug-in unit
Fig.3-7
D. Steel beam and girder structure
Set and use supportive angle steel.
Noise suppression chamber
Air outlet
Suspended bolt
Noise
suppression chamber Inspection
orifice
Air inlet
Air filter
Fig.3-10
Pendant bolt
Supportive
angle steel
Fig.3-8
Installation Manual
3
3.5 Install the drainpipe
96 H
1. Install the indoor unit drainpipe
1350
Install a drain stream trap in the drainpipe to prevent water from
overflowing. (The drainpipeabsorbs the odor. When the outside
static pressure is high (especially the air inlet),it is difficult todrain the
water.)
390
390
Checking panel
Checking panel
2 36
165
45
1350
1225
343
Drain pipe
300
(Unit:mm)
Fig.3-15
Air outlet duct connection screw hole location diagram
100mm or more
After installation, remove the checking panel, pour some water in the
drain elbow to see whether it drains smoothly.
300
300
450
Make sure there is no dust or rubbish falling into indoor unit drain
elbow and drainpipe.
25
The bending part of drainpipe should be fewer than 2. Furthermore,
to reduce the depositing dust, avoid bending the pipe as possible as
you can.
450
Drainage should be natural. When constructing, the outside pipe of
outdoor unit should be inclined (1/50~1/100).
S heath
Sheath
40
(Checking orifice)
362.5
General drain pipe
Fig.3-11
250
25
(Checking or ifice)
362.5
Fig.3-16
(Unit:mm)
Return air duct rivet screw hole location diagram
CAUTION
Rubbish is easy to accumulate at drain stream trap. Make
sure to install a plug or other things which is easy to clean.
2. Test draining
Open the clapboard of indoor unit, pour the water in to see whether it
drain smoothly and whether there is water leakage.
3. Heat insulation
After confirming that drainage is smoothly and there is no leakage,
wrap the drainpipe with insulation material, or there will be
condensed water.
3.6 Dimension
Unit:mm
4. INSTALLATING OUTDOOR UNIT
4.1 Important: Construction Checkpoints
Installation
Check the model and name to avoid mistaken installation.
Installation Manual
4
Installation & maintenance surface
Refrigerant pipe
The refrigerant pipes must have the specified diameter.
1000 mm
Nitrogen of a certain pressure must be filled into the refrigerant
pipe before welding.
The refrigerant pipe must undergo heat insulation treatment.
200 mm
1000 mm
1000 mm
1000 mm
After the refrigerant pipe is installed completely, the indoor unit
cannot be powered on before performing the airtight test and
creating a vacuum.
Top view of the outdoor unit (multiple units installed)
Fig.4-2
Refrigerant pipe
The refrigerant pipe must undergo the airtight test [with
2.94MPa (30kgf/cm2G) nitrogen].
Creating a vacuum
Be sure to use the vacuum pump to create a vacuum of the
connective pipe at both air side and liquid side concurrently.
Refrigerant replenishment
If the pipe is longer than the reference pipe, the refrigerant
replenishment quantity for each outdoor unit should be
calculated through the formula obtained according to the actual
length of the pipe.
Record the refrigerant replenishment quantity, actual length of
pipe and the height difference of the indoor & outdoor units onto
the operation confirmation table (on the electric control box) of
the outdoor unit in advance for future reference.
NOTE
In case any obstacles exist above the outdoor unit, such
obstacles must be 2000mm above the outdoor unit.
If miscellaneous articles are piled around the outdoor unit, such
articles must be 400mm below the top of the outdoor unit.
4.3 Convey Outdoor Unit
Use 4 steel ropes of a f6mm or bigger size to hoist the outdoor
unit and convey it into the room.
In order to prevent scratch and deformity the outdoor unit, apply
a guard board to the surface of contact between the steel wire
and the air conditioner.
Remove the cushion for use in the transport after finishing the
transport.
Electric wiring
Select the power supply capacity and wire size according to the
design manual. The power wire size of the air conditioner should
be greater than that of ordinary motors.
In order to prevent misoperation of the air conditioner, do not
interleave or entwine the power cable (380V-415V 3N~ 50Hz)
with the connection wires (low-voltage wires) of the
indoor/outdoor unit.
Steel wire
Guard board
Power on the indoor unit after performing the airtight test and
making a vacuum.
Trial run
Perform the trial run only after the outdoor unit has been
powered on for over 12 hours.
4.2 Installation Space
Fig.4-3
When installing the unit, leave a space for maintenance shown
in the following figure. Install the power supply at the side of the
outdoor unit. For installation procedure, see the relevant
installation manual.
Ensure enough space for installation and maintenance.(see
Fig.4-1 and Fig.4-2)
4.4 Installing The Outdoor Unit
As shown in Fig.4-4, leave an interval of 100mm between the
outdoor units.
200 mm
200 mm
Air outlet
M12 foundation bolt
Air outlet
Air inlet
4 screws for 1 unit
Fig.4-4
The distance of the foundation bolt is shown in Fig.4-5.
Fig.4-1
Installation Manual
5
757
NOTE
671
(Unit:mm)
When welding the refrigerant pipe, in order to prevent internal
oxidation of the pipe, nitrogen must be filled in. Otherwise, the
oxidized chips may block refrigerating circulatory system.
10HP
4.6 Size Of Outdoor Unit Pipes And Piping
Methods
Through hole (15×20 rectangular hole)
Fig.4-5
Snow protection facilities must be installed in the snowfall areas.
(See the right figure) (in case the snow protection facilities are
incomplete, faults may occur). In order to prevent influence
caused by snow, set up raised pavilion, and install snow protection sheds at the air inlet and air outlet.
Snow protection
shed at the air inlet
Indoor unit
Snow protection
shed at the air outlet
Fig.4-8
Size of outdoor unit pipes and piping methods
Table.4-1
Model
Snow protection
Gas side
96 H
shed at the air inlet
Liquid side
25.0
9.52
Fig.4-6
4.5 Refrigerant Pipe
Allowed length of refrigerant pipe and height difference
The refrigerant pipe adapter is located inside the outdoor unit.
So remove the right front board first.(three M5 screw)
When the pipe is connected from the front side, the pipe can be
led out through the right front board.
Outdoor unit
As shown in Fig.4-7, when brazing the indoor and outdoor
connective lines, pad a sheet metal under the valve avoids the
flame burning the chassis.
Max. pipe length L 50m
Indoor unit
Fig.4-9
Table.4-2
Allowed
value
Fig.4-7
6
50m
Outdoor
(upper)
25m
Outdoor
(lower)
30m
Height difference
between indoor
unit and outdoor
unit (H)
steel
Installation Manual
Max. actual length of pipe (L)
4.7 Airtight Test
Signal wire
After the pipes between the indoor unit and the outdoor unit are
connected, replenish compressed nitrogen to perform airtight
test.
NOTE
The airtight test is performed by using the compressed nitrogen
[2.94MPa(30kg/cm2G)].
Tighten the spool of the gas valve and liquid valve before
compressing the nitrogen.
Compress the nitrogen at the air vent of the gas valve.
Gas-side connective pipe of system
The gas valve and liquid valve are closed in the process of
compressing the nitrogen.
Do not use oxygen, flammable gas or toxic gas in the airtight
test.
Liquid-side connective pipe of system
Fig.4-11
4.8 Use A Vacuum Pump To Create A Vacuum
Use a vacuum pump to make a vacuum. Do not use refrigerant
gas to expel air.
4.13 Refrigerant Leak Precautions
When making the vacuum, start from the air side.
4.9 Open All Valves
4.10 Refrigerant Replenishment Quantity
According to the diameter and length of the connective liquidside pipe of the outdoor unit and indoor unit, calculate the
refrigerant replenishment quantity. The refrigerant for replenishment is R410A.
Table.4-3
Quantity of refrigerant
Diameter of liquid-side pipe
replenished for 1 m pipe length
9.52
0.060kg
4.11 Remove Trash And Moist In The Pipe
Trash and foreign matters may come into the pipe in the process
of installing the refrigerant pipe. Be sure to blow them off with
nitrogen before connecting the pipe to the outdoor units.
This air conditioner uses refrigerant R410A. The R410A is safe
refrigerant which is harmless and non-flammable. The room for
placing the air conditioner should have a proper space. Even if
refrigerant leakage occurs, the density threshold will not be
crossed. Additional measures may also be taken.
Density threshold: Density of the Freon gas that does not harm
the human body. Density threshold of R410A: 0.3 [ kg/m3]
Calculate the total quantity of refrigerant to be replenished (A
[kg]). Total refrigerant quantity for 10HP = refrigerant replenishment quantity upon shipment (11[kg]) + additional refrigerant
replenishment corresponding to the pipe length
Calculate out the indoor volume (B[m3]) (according to the
minimum volume)
Calculate out the refrigerant density:
A[kg]
3
Use high-pressure nitrogen to clean the pipelines. Do not use
the refrigerant of the outdoor unit for cleaning.
4.12 Schematic Diagram Of Connection
Between Indoor Unit And Outdoor Unit
Signal wire
3
Density threshold: 0.3 [kg/m ]
B[m ]
Measures against crossing of the refrigerant density threshold
In order to keep the refrigerant density below the threshold
value, please install a mechanic ventilation device. (perform
ventilation often)
In case frequent ventilation is impossible, please install the
leakage detection alarm device linked with the mechanical
ventilation device.
Outdoor unit
Gas-side connective pipe of system
Room in which refrigerant is leaked
Liquid-side connective pipe of system
Fig.4-10
(All refrigerant is leaked)
Fig.4-12
Installation Manual
7
b. Leakage detection alarm device linked
with the mechanical ventilation device
5.3 Heat Insulation Of The Refrigerant Pipe
Please use heat-resistant materials as heat insulation materials
of the air-side pipe. (e.g., EPT)
Indoor unit
OA
Cover heat insulation materials separately at the liquid side and
the air side. Moreover, perform heat insulation thoroughly for the
air-side pipes of the indoor unit, and prevent water from dripping
outside the unit.
(air-side pipe)
a. Ventilation orifice part
(The leakage detection alarm device should be installed at the place
vulnerable to retention of the refrigerant)
Indoor unit
Fig.4-13
4.14 Completing The Connection System Name
In case multiple systems are set, in order to identify the connection system of the indoor unit and outdoor unit, it is necessary to
give name to each system, and mark it onto the nameplate on
the electric control box cover of the outdoor unit.
NOTE
The indoor unit and outdoor unit are categorized into system A
and system B. When installing and connecting the indoor unit
and outdoor unit, identify the label carefully, and make sure that
indoor unit corresponds to the outdoor unit exactly. Otherwise, it
may lead to fault of the air conditioner.
Model of indoor unit.Room name
Example: The first system indoor unit (A) of the 2nd floor is
recorded as: 2F 1A
Fig.5-1
After applying the auxiliary heat insulation materials, use
vinylresin tape to seal it lest water leak.
6. INSTALL THE CONNECTIVE PIPE
6.1 Preparation Before Installtion
Check the height difference between the indoor unit and the
outdoor unit, and check the length and number of bends of the
refrigerant pipeline, which must meet the following requirements:
Max. height difference....25m (If the height difference is greater
than 5m, it is best to put the outdoor unit below the indoor unit)
Max. pipelinelength.........30m
Max. number of bends....15
In the process of installing the connective pipe, do not letmmmm
the air, dust or foreign substance intrude into the pipeline
system.
5. HEAT INSULATION OF THE PIPE
Install the connective pipe only after fixing the indoor and
outdoor units.
5.1 Heat Insulation Of The Pipe
Keep dry when installing the connective pipe. Do not let moist
intrude into the pipeline system.
In order to prevent faults caused by condensate of the refrigerant pipe and drain pipe, perform condensate prevention and
heat insulation properly.
CAUTION
If it is forecast that high humidity/temperature environment
(condensate temperature is over 23 ) may exist in the ceiling,
e.g., inside the ceiling with slab, ceiling which is in the same
environment as the outdoor air), it is necessary to apply 10mm
or thicker adiabatic wool (16~20kg/m2 ) to the refrigerant pipe
and the drain pipe in addition to applying the general heat insulation materials. Enough heat insulation materials should also be
applied to the refrigerant joint and the pipe joint.
5.2 Heat Insulation Of The Drain Pipe
Be sure to entwine heat insulation materials round the drain pipe
which runs through the room.
Carry through heat insulation for the drain pipes thoroughly.
Installation Manual
8
6.2 PRECAUTIONS DURING BRAZING OF LINES
All outdoor unit and evaporator coil connections are
copper-to-copper and should be brazed with a
phosphorous-copper alloy material such as Silfos-5 or
equivalent. DO NOT use soft solder. The outdoor units
have reusable service valves on both the liquid and
vapor connections. The total system refrigerant charge
is retained within the outdoor unit during shipping and
installation. The reusable service valves are provided to
evacuate and charge per this instruction.
Serious service problems can be avoided by taking
adequate precautions to assure an internally clean and
dry system.
NOTE
CAUTION
Dry nitrogen should always be supplied through the tubing while it
is being brazed, because the temperature required is high enough
to cause oxidation of the copper unless an inert atmosphere is
provide. The flow of dry nitrogen should continue until the joint has
cooled. Always use a pressure regulator and safety valve to insure
that only low pressure dry nitrogen is introduced into the
tubing.Only a small flow is necessary to displace air and prevent
oxidation.
1. Tube diameters are for lengths up to 50 equivalent ft and/or 20 ft
vertical differential.
2. Do not increase or decrease tubing sizes.
NOTE
Line set and indoor coil can be pressurized, to 250 psig with dry
nitrogen and leak tested with a bubble type leak detector. Than
release the nitrogen charge. Do not use the system refrigerant in
the outdoor unit to purge or leak test.
6.3 PRECAUTIONS DURING BRAZING SERVICE VALVE
Precautions should be taken to prevent heat damage to service valve
by wrapping a wet rag around it as shown in Fig. 6.
Also, protect all painted surfaces, insulation, during brazing. After
brazlng cool joint with wet rag.
Valve can be opened by removing the plunger cap and fully inserting
a hex wrench into the stem and backing out counter-clockwise until
valve stem just touches the chamfered retaining wall.
Connect the refrigerant lines using the following procedure:
1. Remove the cap and Schrader core from both the liquid
and vapor service valve service ports at the outdoor
unit. Connect Iow pressure nitrogen to the liquid line
service port.
10. Replace cap on service ports. Do not remove the flare caps from
the service ports except when necessary for servicing the system.
CAUTION
Do not connect manifold gauges unless trouble is suspected.
Approximately 3/4 ounce of refrigerant will be lost each time a
standard manifold gauge is connected.
11. Release the refrigerant charge into the system. Open both the
liquid
and vapor valves by removing the plunger cap and with an hex
wrench back out counter-clockwise until valve stem just touches the
chamfered retaining wall.
12. Replace plunger cap finger tight, then tighten an additional 1/12
turn (1/2 hex flat). Cap must be replaced to prevent leaks.
WARNING
Never attempt to repair any brazed connections while the system is
under pressure. Personal injury could result.
See "System Charge" section for checking and recording system
charge.
Fig.6-1
2. Braze the liquid line to the liquid valve at the outdoor unit. Be sure to
wrap the valve body with a wet rag. Allow the nitrogen to continue
flowing. Refer to the Tabular Data Sheet for proper liquid line sizing.
3. Carefully remove the rubber plugs from the evaporator liquid and vapor
connections at the indoor coil.
4. Braze the liquid line to the evaporator liquid connection. Nitrogen
should be flowing through the evaporator coil.
5. Slide the plastie cap away from the vapor connection at the indoor coil.
Braze the vapor line to the evaporator vapor connection. Refer to the
Table 1 for proper vapor line sizing.
6. Protect the vapor valve with a wet rag and braze the vapor line connection
to the outdoor unit. The nitrogen flow should be exiting the system from
the vapor service port connection. After this connection has cooled,
remove the nitrogen source from the liquid fitting service port.
7. Replace the Schrader core in the liquid and vapor valves.
8. Leak test all refrigerant piping connections including the service port
flare caps to be sure they are leak tight. DO NOT OVER TIGHTEN
(between 40 and 60 inch -lbs. maximum).
9. Evacuate the vapor line, evaporator and the liquid line, to 500 microns
or less.
Installation Manual
9
6.4 Expelling Air
Use refrigerant tank to expel air (see Fig.6-2 and Fig.6-3 )
From the following table, select a method of expelling air.
Table.6-2
Length of connective pipe
(single pass)
Procedure of expelling air
Less than 5m
Use refrigerant in the outdoor unit
5~15m
Use vacuum pump or refrigerant
tank.
If the air conditioner is relocated, be sure to use a vacuum pump
or refrigerant tank to expel air.
Screw up the pipe nuts at A, B, C and D completely.
Loosen and remove the square-head cover and the maintenance orifice nut of valves A and B.
Connect the filler hose of the refrigerant tank with the maintenance orifice of valve A.
Loosen the valve of the refrigerant tank, continue filling refrigerant for 6 seconds to expel the air, and tighten the nut of valve B
quickly.
Loosen the valve of the refrigerant tank again, and fill the
refrigerant for 6 seconds. Detect leak for all adapters at A, B, C
and D. After making sure that no leak exists, screw off the filler
hose. After all the filled refrigerant is expelled, screw up the
maintenance orifice nut of valve A quickly.
Use the refrigerant in the outdoor unit to expel air(see Fig.62and Fig.6-3)
Open the square-head spools of valves A and B completely.
Screw up the pipe nuts at A, B, C and D completely.
Tighten the square-head cover of valves A and B.
Loosen and remove the square-head cover of valves A and B,
rotate the square-head spool of valve B counterclockwise for 45
degrees and stay for about 10 seconds, and then close the
spool of valve B tightly.
Use a vacuum pump to expel the air (Fig.6-4 ): (For method of
using the manifold valve, see the operation manual of manifold
valve)
Detect leak for all adapters at A, B, C and D. After making sure
that no leak exists, open the maintenance orifice nut of valve A.
After all air is expelled, tighten the maintenance orifice nut of
valve A.
Tighten the square-head cover of valves A and B completely.
Air side
A
Connect the filler hose adapter to the vacuum pump.
Open the low pressure (Lo) handle of the manifold valve
completely.
Open the spools of valves A and B completely.
Outdoor unit
Loosen and remove the maintenance orifice nut of valve A, and
connect the filler hose of the manifold valve to the maintenance
orifice of valve A (tighten both valve A and valve B).
Start the vacuum pump to extract air. At the beginning of
extracting air, slightly loosen the maintenance orifice nut of valve
B, check whether any air enters it (the vacuum pump noise
changes, and the multimeter indicates from negative to 0). Then
tighten this maintenance orifice nut.
Upon completion of vacuuming, tighten the low pressure (Lo)
handle of the manifold valve completely and stop the vacuum
pump. Keep extracting air for over 15 minutes. Check whether
the multimeter points at -1.0X10 Pa(-76cmHg).
Intdoor unit
C
D
B
Liquid side
Stop valve
pipe adapter
Fig.6-2
Loosen and remove the square-head cover of valves A and B.
After opening valves A and B completely, tighten the squarehead cover of valves A and B.
Remove the filler hose off the maintenance orifice of valve A, and
then tighten the nut.
Manifold valve
Multimeter
manometer
-76cmHg
Hi -handle
Lo-handle
Filler hose
Lo pressure valve
Vac uu m pum p
Fig.6-3
Filler hose
Fig.6-4
Installation Manual
10
Inspection panel
Procedure of using stop valve
Drain pipe
Inspection panel
Open the spool until it touches the stop block. Do not attempt to
open further.
Use a spanner or a similar tool to tighten the bonnet. The bonnet
tightening torque is shown in aboveTable “Tightening torque”.
Upon completion of installation, open all valves before trial run.
Each unit has two valves of different sizes located at the outdoor
unit side. Of the two valves, one is gas valve and the other is
liquid valve. The procedure of opening/closing the valve is
shown in the right figure (Fig.6-5).
Procedure of opening the valve: Open the square-head cover,
use a spanner to capture the square head and open it
thoroughly. Then tighten the square-head cover.
Procedure of closing the valve: Same as the procedure of
opening the valve, but rotate the spanner clockwise thoroughly.
System port
Bush
(inspection and sweep orifice)
Bush
(inspection and sweep orifice)
Main drain pipe
Fig.7-1
NOTE
Drain pipe trash gains easily at the drainage controller. Be sure
to install a stopper and a structure that cleans up trash easily.
Valve body
Maintenance orifice
Connective pipe port
Fig.6-5
6.5 Leak Detection
Trial draining of the drain pipe
Open the side panel of the indoor unit, fill water inward, and
check whether the water can be drained smoothly. Check water
leak at the joint.
Heat insulation of drain pipe
After making sure that the water drains smoothly and no water is
leaked, use adiabatic wool bushes to preserve heat of the drain
pipe. Otherwise, condensate will occur.
8. ELECTRIC CONNECTION
Use soap water or a leak detector to check whether gas leakage
exists at the adapters.
6.6 Heat Insulation
CAUTION
Use heat insulation materials to wrap the part protruding outside
the flared pipe joint and the refrigerant pipe of the liquid pipe and
the gas pipe, and ensure that no gap exists between them.
Use special power supply for the air conditioner. Design power
supplies specific to the indoor unit and outdoor unit. The supply
voltage must comply with the nominal voltage.
Imperfect heat insulation may lead to condensate drips.
The external supply circuit of the air conditioner must have a
ground wire, and the power supply ground wire of the indoor unit
must be connected with the external ground wire firmly.
7. INSTALL THE DRAIN PIPE
Install the drain pipe of the indoor unit
In order to prevent drain overflow, install a drainage controller at
place 1 of the drain pipe. (The drainage controller is designed to
smoothen the drainage when the static pressure outside the unit
is high, especially at the air inlet, in addition to remove stink
through the drain pipe.)
The wiring must be performed by professional technicians
according to the circuit diagram labels.
Distribute the wires according to the relevant electric technical
standards promulgated by the State, and set the Residual
Current-operated Circuit Breaker (RCCB) properly.
The power wire and the signal wire shall be laid out neatly and
properly, without mutual interference or contacting the connection pipe or valve.
The drain of water is natural. In the construction, the external
pipe of the outdoor unit slants downward at a gradient of
1/50~1/100.
No power cable is attached to this equipment. The user can
select the power cable by reference to the stipulated power
supply specifications. No joint of wires is allowed.
The number of bends and folds of the drain pipe should not
exceed 2. Try to avoid bends in order to prevent trash accumulation.
In the construction, do not drop trash into the drip tray or drain
pipe of the indoor unit.
Upon completion of wire connection, double check it and then
connect the power supply.
Upon completion of installing the drain pipe, remove the inspection panel. Put water into the drip tray to check whether the water
can be drained levelly and steadily.
An all-pole disconnection device which has at least 3mm
separation distance in all pole and a residual current
device(RCD)with the rating of above 10mA shall be incorporated
in the fixed wiring according to the national rule.
The appliance shall be installed in accordance with national
wiring regulations.
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11
com connection between main and auxil units
Specifications of power supply
Table.8-1
Indoor unit
Outdoor unit
Model
96
Type
Hi. static pressure
Power
220V-240V~ 50Hz
380V~415V 3N~ 50Hz
Switch capacity of the main
power suppliy/fuse(A)
20/12
60/40
96
YCW-450/750
5×6.0 mm 2
Q
E
(COMwire terminal)
P
Q
E
3-core shield wire RVVP-300/300 3 0.5mm²
[Optional]
Fig.8-3
RVV-300/500 4×1.0 mm 2 (HEAT & COOL)
RVV-300/500 2×1.0 mm 2 (COOL ONLY)
NOTE
RVVP-300/300
5×0.5 mm 2
Wire controls
connective wire
COM wire can be arranged with the connection pipe . Please
take some protection measure to prevent the wire from aging.
Power wires
The power wires are as follows: (schematic diagram)
Indoor unit
Control wire between
indoor unit and outdoor
unit
RCCB
Manual switch
Indoor unit power supply
220-240V~ 50Hz
RCCB
Manual switch
Outdoor unit power supply
380-415V 3N~ 50Hz
Fig.8-1
Set the main and auxil units(MTA-150CR)
unit (main)
unit (auxil)
Fig.8-2
NOTE
Please identify outdoor main unit and auxilary unit. Only main
unit connects with signal wire of indoor unit. Users should adjust
the dial on electric control board of outdoor unit as follows,
otherwise incorrect adjustment may cause malfunction.
12
P
auxil unit
RVV-300/500
3×2.5 mm 2
Outdoor unit power cable(mm 2)
includes grounded wire
Installation Manual
main unit
(COMwire terminal)
Indoor unit power cable(mm 2)
includes grounded wire
connective wire of
indoor outside unit
Signal wire of indoor unit connects to outdoor main unit only and
the control command to outdoor auxil unit is sent by COM wire
connecting with main unit. Make sure to connect COM wire
correctly, otherwise COM error may occur and auxil unit can not
start. See following chart for connection:
9. ELECTRIC WIRE DIAGRAM
96 H
Indoor Unit
L
N 1
2
3
Wire controller
4
Fixed-rate wire
controller (option)
4-cord cable
RVV-300/500 4X1.0mm
2
Power supply:
220-240V~ 50Hz
3-cord cable
2
Power supply wire
Signal wire
Outdoor unit
5-cord cable
RVVP-300/500 5X0.5mm
Power supply:
380-415V 3N~ 50Hz
5-cord cable
YCW-450/750 5X 6mm 2
Fig.9-1
This wire diagram is applicable to both cooling and heating model .
Indoor Unit
L
N 1
2
3
Wire controller
4
Fixed-rate wire
controller (option)
Power supply wire
Signal wire
Outdoor unit
5-cord cable
RVVP-300/500 5X0.5mm
2-cord cable
RVV-300/500 2X1.0mm2
2
Power supply:
220-240V~ 50Hz
3-cord cable
Power supply:
380-415V 3N~ 50Hz
5-cord cable
YCW-450/750 5X 6mm 2
Fig.9-2
This wire diagram is applicable to cooling only model.
NOTE
Pay attention to the phase sequence of the power supply. If the phase sequence is reversed, the compressor will not start.
Meanwhile, the fault indicator of the outdoor electric control board will light up. For details, see Outdoor unit wring diagram on the
cover plate of the electric control box .
After shifting the phase sequence, power on the unit until the fault indicator goes out and the compressor starts up normally.
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13
10. METHODS OF CONFIGURING AND SELECTING INSTALLATION
Characteristics,advantages
and other contents
Material name
Air inlet wooden grille
1
Filter
Hose(for absorbing noise)
2
1. Install the fillter at the main body
grille in case the storey height is low,
and at the main body of the indoor
unit in case the storey height is high.
2. It cleans conveniently at the
time of installing/uninstalling the
fillter.
3. The button structure is easy to
install and uninstall.
1. For purpose of air inlet
2. Must adopt fire-resistant materials.
(Those materials other than specified
by manfacturer shall not be applied)
3. The heat insulation material must
be glass wool.
Material name
Air outlet
8
Air outlet
9
Air outlet
Hose(for general purpose)
1. For purpose of air outlet
2. Must adopt fire-resistant materials.
(Those materials other than specified
by manfacturer shall not be applied)
3. The heat insulation material must
be glass wool.
3
Rectangular
10
Round
Air inlet noise pipe
4
Air outlet noise pipe
5
Distributor
6
Rectangular air outlet
7
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14
1. Install the unit at the air inlet so
that the air flows smoothly and the
noise is lower.
2. The noise value varies with the
length.
3. The hose joint should be bent lest
detachment of the pipe.
1. Install the unit at the air outlet so
that the air flows smoothly and the
noise is lower.
2. The noise value varies with the
length.
3. The hose joint should be bent lest
detachment of the pipe.
1. Install the unit at a diffuser so
that the air flows smoothly and the
noise is lower.
2. Select 1BY2 or 1BY3 according
to the quantity of the diffusers.
3. The diffuser pipes should
preferably have the same length
after branching, and theminimum
length of the ventilation pipes is 5m.
1. Fixed model that diffuses air at
a 360 angle.
2. The outline size should increase
when the air volumeis over
350CMH. (for above 303), i.e.,
when about 9 diffusers are
required, the outline sizeshould
increase.
3. The diffuser pipes should
preferably have the same length
after branching, and theminimum
length of the ventilation pipes is 5m.
Linear diffuser
11
Air outlet wooden grille
12
Duct wrapping tape
Aluminium adhesive tape
Characteristics,advantages
and other contents
1. Fixed model that diffuses air at a
360 angle.
2. The outline size should increase
when the air volume is over
350CMH. (for above 303), i.e., When
about 9 diffusers are required, the
outline size should increase.
3. Proper air speed: For air speed of
over 2-3.5m/s, select other diffusers
(with greater noise).
4. Install the diffuser pipe if it is
necessary to install the model of
over 3.5m/s.
5. For purpose of cooling-only model
1 The lengthwise adjustable model
which diffuses air at a 360 angle.
2. With the changeof the cooling/
heating air flow, the horizontal and
vertical distance of thefan can be
adjusted (applicable to department
store and exhibition hallwhere the
decorative effect is essential).
1. Low noise comparedwith other
air outlets. Applicableto tall
buildings that require along
distance of air conditioning.
2. Select the ventilationpipe
connection calibre according tothe
distance and the air speed.
3. Applicable to storey height of over
5m (for design of tall storeys such
as temple, consult manfacturer).
1. The fan is the adjustable type
which can change direction of air
flow. It is used for deluxe decoration.
2. The outline size should increase
when the air volume is over
450CMH. (3 or 4SOLT) When about
6 diffusers are required, the outline
size should increase.
3. If the proper air speed is 2.5 5m/s
and actual air speed reaches over
5m/s, it is necessary to choose other
diffusers (with higher noise values).
1. Low noise comparedwith other
air outlets. Applicableto tall
buildings that require along distance
of air conditioning.
2. Select the ventilationpipe
connection calibre according tothe
distance and the airspeed.
3. Applicable tostorey height of over
5m (for design oftall storeys such
as temple, consult manfacturer).
1. Flanges and pipelines connected
to the ventilation pipes.
2. When the noisepipe is connected
with the hose, the ventilation pipe
tape must be applied (otherwise,
with only adhesive tape, the
adhesion will be weakeneddue to
change of temperature).
1. It is used to prevent glass wo ol
lea k a nd seal the g as at the time of
connecting the flanges and
pip eline s o f the ventilatio n pipe s.
2. E ntwine for over 3 circles.
3. U se ventilation pipe-specific
tape s (instead of ordinary adhesive
tap es).
In o rder to en sure the installation
qua lity and durability, it is necessary
to u se auxilia ry materials of standard
specifications provided by
ma nfactu rer Electr onics and the
auxiliary products o f the specified
ma nufactu rers.
11. CONSTRUCTION AND VENTILATION PIPELINE DESIGN SCHEME
Examples of construction and ventilation pipeline design scheme(Flowering hidden series)
Washroom
Document reference room
Computer room
Meeting room
Office
Corridor
Warehouse
Office
Construction and ventilation pipeline design scheme
Kitchen
Hall
Lab
Retiring room
Meeting
room
Manager
office
Document room
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15
12. TRIAL RUN
Indoor unit
Please conduct in accordance with “Trial Run Tenor Nameplate”
on the electric control box.
Check whether the switch of the remote controller or wire
controller is normal.
Check whether the functional keys of the remote controller or
wire controller are normal.
CAUTION
Check whether the indoor temperature conditioning is normal.
Perform the trial run only after the outdoor unit has been
powered on for over 12 hours.
Check whether the indicators illuminate normally.
Check that all valves are opened before trial run.
Check whether the manual operation buttons are normal.
Check the electric safety before trial run.
Check whether the drain function is normal.
Do not perform compulsory operation in any way.(It is very
dangerous if the protection device is not active)
Check whether the connective copper pipes and the drain pipes
generate condensate due to loose wrapping.
Open the air inlet grille to check whether any penetration or leak
of water occurs, especially at the drain stopper.
Perform trial run only after all installations are finished.
Confirm the following issues before trial operation, and
box for the confirmed items.
the
Check whether any vibration or abnormal sound occurs during
the operation.
Test whether the unit works normally in the heatig mode.
Check whether the indoor unit and the outdoor are
installed properly.
Check whether the piping and wiring are correct.
Check whether the refrigerant pipeline system is
inspected for leakage.
Outdoor unit
Check whether any vibration or abnormal sound occurs during
the operation.
Check whether the air, noise and condensate generated by the
unit affect the neighbors.
Check whether the drain is smooth.
Check whether any refrigerant is leaked.
Check whether the heat insulation is perfect.
Check whether the ground cables are connected
correctly.
Check whether the pipe length and the refrigerant
amount are recorded.
Check whether the supply voltage is equal to the rated
voltage of the air conditioner.
Check whether any obstacles exist at the air
inlet/outlet of the indoor or outdoor unit.
Open the gas valve and the liquid valve.
Connect the power supply to preheat the air
Install the remote controller holder as required by the user.
The holder must be installed in a location suitable for transmitting the signals of the remote controller to the indoor unit.
Trial run
Use the remote controller or wire controller (matched) to let the
air conditioner run in the cooling mode. Inspect the following
items against the operation manual. (If any fault occurs, remove
the fault by reference to the Section headed “Faults of Air
Conditioner and Causes” in the Operation Manual.)
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16